- "Who won't give up the ghost?"
- ―The Haunted House's tagline
Agatha Raisin and the Haunted House is the fourteenth book in the Agatha Raisin Mysteries series by M. C. Beaton. The book was published in 2003.
Just back from an extended stay in London, Agatha Raisin finds herself greeted by torrential rains and an old, familiar feeling of boredom. When her handsome new neighbor, Paul Chatterton, shows up on her doorstep, she tries her best to ignore his obvious charms, but his sparkling black eyes and the promise of adventure soon lure her into another investigation.
Paul has heard rumors about Agatha's reputation as the Cotswold village sleuth and wastes no time offering their services to the crotchety owner of a haunted house. Whispers, footsteps, and a cold white mist are plaguing Mrs. Witherspoon, but the police have failed to come up with any leads, supernatural or otherwise. The neighbors think it's all a desperate ploy for attention, but Paul and Agatha are sure something more devious is going on. Someone's playing tricks on Mrs. Witherspoon, and when she turns up dead under suspicious circumstances, Agatha finds herself caught up in another baffling murder mystery.
- Agatha Raisin
- Paul Chatterton
- Mrs. Witherspoon
- Main article: The Haunted House
Due to the nature of adapting literature for the screen, in addition to the Agatha Raisin books being adapted in a different order to that of when they were originally published, the episode has several differences to the book. Mainly, the character of Paul Chatterton is not included. In the episode, it is James Lacey rather than Paul who suggests investigating Ivy Hall - as at this point in the television series, Agatha and James are still in a relationship.